<?xml version="1.0" encoding="US-ASCII"?>
<!-- RR Donnelley Xcelerate Taxonomy Calculation Linkbase, based on XBRL 2.1  http://www.rrdonnelley.com/ -->
<!-- Version: 6.22.4 -->
<!-- Round: 7 -->
<!-- Creation date: 2014-12-03T19:51:07Z -->
<!-- Copyright (c) 2005-2013 R.R. Donnelley &amp; Sons Company All Rights Reserved. -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DocumentandEntityInformation" roleURI="http://miteksystems.com/taxonomy/role/DocumentandEntityInformation"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_StatementOfFinancialPositionClassified" roleURI="http://miteksystems.com/taxonomy/role/StatementOfFinancialPositionClassified"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_StatementOfFinancialPositionClassifiedParen" roleURI="http://miteksystems.com/taxonomy/role/StatementOfFinancialPositionClassifiedParenthetical"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_StatementOfIncomeAlternative" roleURI="http://miteksystems.com/taxonomy/role/StatementOfIncomeAlternative"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_StatementOfShareholdersEquityAndOtherComprehensiveIncome" roleURI="http://miteksystems.com/taxonomy/role/StatementOfShareholdersEquityAndOtherComprehensiveIncome"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_StatementOfShareholdersEquityAndOtherComprehensiveIncomeParen" roleURI="http://miteksystems.com/taxonomy/role/StatementOfShareholdersEquityAndOtherComprehensiveIncomeParenthetical"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_StatementOfCashFlowsIndirect" roleURI="http://miteksystems.com/taxonomy/role/StatementOfCashFlowsIndirect"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_StatementOfCashFlowsIndirectParen" roleURI="http://miteksystems.com/taxonomy/role/StatementOfCashFlowsIndirectParenthetical"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesAdditionalInformation" roleURI="http://miteksystems.com/taxonomy/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesPotentiallyDilutiveCommonShares" roleURI="http://miteksystems.com/taxonomy/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesPotentiallyDilutiveCommonShares"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesComputationOfBasicAndDilutedNetLossPerShare" roleURI="http://miteksystems.com/taxonomy/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesComputationOfBasicAndDilutedNetLossPerShare"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesSummaryOfAccountsReceivable" roleURI="http://miteksystems.com/taxonomy/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesSummaryOfAccountsReceivable"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesSummaryOfPropertyAndEquipment" roleURI="http://miteksystems.com/taxonomy/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesSummaryOfPropertyAndEquipment"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesComponentsOfComprehensiveLoss" roleURI="http://miteksystems.com/taxonomy/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesComponentsOfComprehensiveLoss"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureInvestmentsAdditionalInformation" roleURI="http://miteksystems.com/taxonomy/role/DisclosureInvestmentsAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureInvestmentsSummaryOfInvestmentsByTypeOfSecurity" roleURI="http://miteksystems.com/taxonomy/role/DisclosureInvestmentsSummaryOfInvestmentsByTypeOfSecurity"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureInvestmentsSummaryOfFairValueOfInvestmentsMeasuredOnRecurringBasis" roleURI="http://miteksystems.com/taxonomy/role/DisclosureInvestmentsSummaryOfFairValueOfInvestmentsMeasuredOnRecurringBasis"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureDebtAdditionalInformation" roleURI="http://miteksystems.com/taxonomy/role/DisclosureDebtAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureStockholdersEquityAdditionalInformation" roleURI="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquityAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureStockholdersEquityFairValueCalculationsForStockBasedCompensationAwards" roleURI="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquityFairValueCalculationsForStockBasedCompensationAwards"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureStockholdersEquityStockBasedCompensationExpenseRelatedToStockOptionsAndRSUs" roleURI="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquityStockBasedCompensationExpenseRelatedToStockOptionsAndRSUs"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureStockholdersEquitySummaryOfVestedAndUnvestedOptionsWeightedAverageExercisePricePerShareWeightedAverageRemainingTermAndAggregateIntrinsicValue" roleURI="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquitySummaryOfVestedAndUnvestedOptionsWeightedAverageExercisePricePerShareWeightedAverageRemainingTermAndAggregateIntrinsicValue"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureStockholdersEquityStockOptionActivity" roleURI="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquityStockOptionActivity"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureStockholdersEquitySignificantRangesOfOutstandingAndExercisableOptions" roleURI="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquitySignificantRangesOfOutstandingAndExercisableOptions"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureStockholdersEquityNumberOfStockOptionsOutstandingUnderPriorPlans" roleURI="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquityNumberOfStockOptionsOutstandingUnderPriorPlans"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureStockholdersEquityRSUActivity" roleURI="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquityRSUActivity"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureIncomeTaxesIncomeTaxProvisionBenefit" roleURI="http://miteksystems.com/taxonomy/role/DisclosureIncomeTaxesIncomeTaxProvisionBenefit"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureIncomeTaxesCompanysNetDeferredTaxAssetsAndLiabilities" roleURI="http://miteksystems.com/taxonomy/role/DisclosureIncomeTaxesCompanysNetDeferredTaxAssetsAndLiabilities"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureIncomeTaxesAdditionalInformation" roleURI="http://miteksystems.com/taxonomy/role/DisclosureIncomeTaxesAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureIncomeTaxesIncomeTaxesComputedUsingFederalIncomeTaxRate" roleURI="http://miteksystems.com/taxonomy/role/DisclosureIncomeTaxesIncomeTaxesComputedUsingFederalIncomeTaxRate"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureCommitmentsAndContingenciesAdditionalInformation" roleURI="http://miteksystems.com/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureCommitmentsAndContingenciesFutureAnnualMinimumRentalPaymentsPayable" roleURI="http://miteksystems.com/taxonomy/role/DisclosureCommitmentsAndContingenciesFutureAnnualMinimumRentalPaymentsPayable"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#DisclosureRevenueAndVendorConcentrationsAdditionalInformation" roleURI="http://miteksystems.com/taxonomy/role/DisclosureRevenueAndVendorConcentrationsAdditionalInformation"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_NotesToFinancialStatementsBasisOfPresentationAndSignificantAccountingPoliciesTextBlock" roleURI="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsBasisOfPresentationAndSignificantAccountingPoliciesTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_NotesToFinancialStatementsBasisOfPresentationAndSignificantAccountingPoliciesTextBlockPolicies" roleURI="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsBasisOfPresentationAndSignificantAccountingPoliciesTextBlockPolicies"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_NotesToFinancialStatementsBasisOfPresentationAndSignificantAccountingPoliciesTextBlockTables" roleURI="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsBasisOfPresentationAndSignificantAccountingPoliciesTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_NotesToFinancialStatementsInvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" roleURI="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsInvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_NotesToFinancialStatementsInvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlockTables" roleURI="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsInvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_NotesToFinancialStatementsDebtDisclosureTextBlock" roleURI="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsDebtDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlock" roleURI="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlockTables" roleURI="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_NotesToFinancialStatementsIncomeTaxDisclosureTextBlock" roleURI="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_NotesToFinancialStatementsIncomeTaxDisclosureTextBlockTables" roleURI="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlock" roleURI="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlockTables" roleURI="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="mitk-20140930.xsd#Role_NotesToFinancialStatementsConcentrationRiskDisclosureTextBlock" roleURI="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsConcentrationRiskDisclosureTextBlock"/>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DocumentandEntityInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/StatementOfFinancialPositionClassified">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="us-gaap_AccountsPayableCurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="us-gaap_AccountsReceivableNetCurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="us-gaap_AssetsCurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredRevenueCurrent" xlink:label="us-gaap_DeferredRevenueCurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredRevenueNoncurrent" xlink:label="us-gaap_DeferredRevenueNoncurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongTermInvestments" xlink:label="us-gaap_LongTermInvestments"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="us-gaap_OtherAssetsCurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="us-gaap_OtherAssetsNoncurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="us-gaap_OtherLiabilitiesNoncurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="us-gaap_PreferredStockValue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShortTermInvestments" xlink:label="us-gaap_ShortTermInvestments"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_AssetsCurrent" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_LongTermInvestments" order="1.0600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_PropertyPlantAndEquipmentNet" order="1.0700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_OtherAssetsNoncurrent" order="1.0800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_ShortTermInvestments" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AccountsReceivableNetCurrent" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_OtherAssetsCurrent" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_LiabilitiesCurrent" order="1.1300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_DeferredRevenueNoncurrent" order="1.1400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_OtherLiabilitiesNoncurrent" order="1.1500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_Liabilities" order="1.1600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_StockholdersEquity" order="1.2200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_AccountsPayableCurrent" order="1.0900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_EmployeeRelatedLiabilitiesCurrent" order="1.1000" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_DeferredRevenueCurrent" order="1.1100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_OtherAccruedLiabilitiesCurrent" order="1.1200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_PreferredStockValue" order="1.1700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_CommonStockValue" order="1.1800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_AdditionalPaidInCapital" order="1.1900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" order="1.2000" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit" order="1.2100" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/StatementOfFinancialPositionClassifiedParenthetical">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/StatementOfIncomeAlternative">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="us-gaap_CostsAndExpenses"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="us-gaap_GeneralAndAdministrativeExpense"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LicenseCosts" xlink:label="us-gaap_LicenseCosts"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LicensesRevenue" xlink:label="us-gaap_LicensesRevenue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherCostOfServices" xlink:label="us-gaap_OtherCostOfServices"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherNonoperatingExpense" xlink:label="us-gaap_OtherNonoperatingExpense"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherNonoperatingIncome" xlink:label="us-gaap_OtherNonoperatingIncome"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="us-gaap_OtherNonoperatingIncomeExpense"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="us-gaap_ResearchAndDevelopmentExpense"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SalesRevenueServicesGross" xlink:label="us-gaap_SalesRevenueServicesGross"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SellingAndMarketingExpense" xlink:label="us-gaap_SellingAndMarketingExpense"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_NetIncomeLoss" order="1.1600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" order="1.1700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CostsAndExpenses" xlink:to="us-gaap_LicenseCosts" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CostsAndExpenses" xlink:to="us-gaap_OtherCostOfServices" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CostsAndExpenses" xlink:to="us-gaap_SellingAndMarketingExpense" order="1.0600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CostsAndExpenses" xlink:to="us-gaap_ResearchAndDevelopmentExpense" order="1.0700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CostsAndExpenses" xlink:to="us-gaap_GeneralAndAdministrativeExpense" order="1.0800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_OperatingIncomeLoss" order="1.1000" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_OtherNonoperatingIncomeExpense" order="1.1300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" order="1.1400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_IncomeTaxExpenseBenefit" order="1.1500" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_Revenues" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_CostsAndExpenses" order="1.0900" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="us-gaap_OtherNonoperatingIncome" order="1.1100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="us-gaap_OtherNonoperatingExpense" order="1.1200" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_LicensesRevenue" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_SalesRevenueServicesGross" order="1.0200" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/StatementOfShareholdersEquityAndOtherComprehensiveIncome">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/StatementOfShareholdersEquityAndOtherComprehensiveIncomeParenthetical">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/StatementOfCashFlowsIndirect">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:label="us-gaap_AmortizationOfFinancingCostsAndDiscounts"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="us-gaap_DepreciationDepletionAndAmortization"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredRevenue" xlink:label="us-gaap_IncreaseDecreaseInDeferredRevenue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInOtherAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInOtherAccruedLiabilities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:label="us-gaap_IncreaseDecreaseInReceivables"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsToAcquireInvestments" xlink:label="us-gaap_PaymentsToAcquireInvestments"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:label="us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="us-gaap_ProceedsFromStockOptionsExercised"/>
    <loc xlink:type="locator" xlink:href="mitk-20140930.xsd#mitk_ProvisionAndRecoveryForDoubtfulAccounts" xlink:label="mitk_ProvisionAndRecoveryForDoubtfulAccounts"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RepaymentsOfLongTermCapitalLeaseObligations" xlink:label="us-gaap_RepaymentsOfLongTermCapitalLeaseObligations"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="us-gaap_ShareBasedCompensation"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" order="1.1300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" order="1.1800" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" order="1.2200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock" order="1.1900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="us-gaap_ProceedsFromStockOptionsExercised" order="1.2000" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="us-gaap_RepaymentsOfLongTermCapitalLeaseObligations" order="1.2100" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:to="us-gaap_PaymentsToAcquireInvestments" order="1.1400" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:to="us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities" order="1.1500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" order="1.1600" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:to="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" order="1.1700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_NetIncomeLoss" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_ShareBasedCompensation" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_DepreciationDepletionAndAmortization" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_AmortizationOfFinancingCostsAndDiscounts" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="mitk_ProvisionAndRecoveryForDoubtfulAccounts" order="1.0500" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_GainLossOnSaleOfPropertyPlantEquipment" order="1.0600" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_IncreaseDecreaseInReceivables" order="1.0700" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingAssets" order="1.0800" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayable" order="1.0900" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities" order="1.1000" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_IncreaseDecreaseInDeferredRevenue" order="1.1100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_IncreaseDecreaseInOtherAccruedLiabilities" order="1.1200" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/StatementOfCashFlowsIndirectParenthetical">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesPotentiallyDilutiveCommonShares">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesComputationOfBasicAndDilutedNetLossPerShare">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities" xlink:label="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities" order="1.0200" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesSummaryOfAccountsReceivable">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsReceivableGrossCurrent" xlink:label="us-gaap_AccountsReceivableGrossCurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="us-gaap_AccountsReceivableNetCurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AccountsReceivableNetCurrent" xlink:to="us-gaap_AccountsReceivableGrossCurrent" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AccountsReceivableNetCurrent" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" order="1.0200" weight="-1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesSummaryOfPropertyAndEquipment">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="us-gaap_PropertyPlantAndEquipmentGross"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentGross" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" order="1.0300" weight="-1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesComponentsOfComprehensiveLoss">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureInvestmentsAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureInvestmentsSummaryOfInvestmentsByTypeOfSecurity">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:label="us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:label="us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:label="us-gaap_AvailableForSaleSecuritiesAmortizedCost"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InvestmentsFairValueDisclosure" xlink:label="us-gaap_InvestmentsFairValueDisclosure"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:to="us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" order="1.0100" weight="-1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:to="us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:to="us-gaap_InvestmentsFairValueDisclosure" order="1.0300" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureInvestmentsSummaryOfFairValueOfInvestmentsMeasuredOnRecurringBasis">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureDebtAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquityAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquityFairValueCalculationsForStockBasedCompensationAwards">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquityStockBasedCompensationExpenseRelatedToStockOptionsAndRSUs">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquitySummaryOfVestedAndUnvestedOptionsWeightedAverageExercisePricePerShareWeightedAverageRemainingTermAndAggregateIntrinsicValue">
    <loc xlink:type="locator" xlink:href="mitk-20140930.xsd#mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedAggregateIntrinsicValue" xlink:label="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedAggregateIntrinsicValue"/>
    <loc xlink:type="locator" xlink:href="mitk-20140930.xsd#mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedNumber" xlink:label="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedNumber"/>
    <loc xlink:type="locator" xlink:href="mitk-20140930.xsd#mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAggregateIntrinsicValue" xlink:label="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAggregateIntrinsicValue"/>
    <loc xlink:type="locator" xlink:href="mitk-20140930.xsd#mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndUnvestedAggregateIntrinsicValue" xlink:label="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndUnvestedAggregateIntrinsicValue"/>
    <loc xlink:type="locator" xlink:href="mitk-20140930.xsd#mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndUnvestedNumber" xlink:label="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndUnvestedNumber"/>
    <loc xlink:type="locator" xlink:href="mitk-20140930.xsd#mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedNumber" xlink:label="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedNumber"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndUnvestedAggregateIntrinsicValue" xlink:to="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAggregateIntrinsicValue" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndUnvestedAggregateIntrinsicValue" xlink:to="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedAggregateIntrinsicValue" order="1.0600" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndUnvestedNumber" xlink:to="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedNumber" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndUnvestedNumber" xlink:to="mitk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedNumber" order="1.0200" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquityStockOptionActivity">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquitySignificantRangesOfOutstandingAndExercisableOptions">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquityNumberOfStockOptionsOutstandingUnderPriorPlans">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureStockholdersEquityRSUActivity">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureIncomeTaxesIncomeTaxProvisionBenefit">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentFederalTaxExpenseBenefit" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentStateAndLocalTaxExpenseBenefit" order="1.0200" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureIncomeTaxesCompanysNetDeferredTaxAssetsAndLiabilities">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsGross" xlink:label="us-gaap_DeferredTaxAssetsGross"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNet"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:to="us-gaap_DeferredTaxAssetsGross" order="1.0700" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:to="us-gaap_DeferredTaxAssetsValuationAllowance" order="1.0800" weight="-1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureIncomeTaxesAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureIncomeTaxesIncomeTaxesComputedUsingFederalIncomeTaxRate">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:label="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpense" xlink:label="us-gaap_IncomeTaxReconciliationNondeductibleExpense"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationNondeductibleExpense" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" order="1.0400" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureCommitmentsAndContingenciesFutureAnnualMinimumRentalPaymentsPayable">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" order="1.0100" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" order="1.0200" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" order="1.0300" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" order="1.0400" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" order="1.0500" weight="1.00" priority="2" use="optional"/>
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" order="1.0600" weight="1.00" priority="2" use="optional"/>
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/DisclosureRevenueAndVendorConcentrationsAdditionalInformation">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsBasisOfPresentationAndSignificantAccountingPoliciesTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsBasisOfPresentationAndSignificantAccountingPoliciesTextBlockPolicies">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsBasisOfPresentationAndSignificantAccountingPoliciesTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsInvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsInvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsDebtDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlock">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlockTables">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://miteksystems.com/taxonomy/role/NotesToFinancialStatementsConcentrationRiskDisclosureTextBlock">
  </calculationLink>
</linkbase>
